We're definitely going to see more coming.
Don't be fooled, the biggest reason this season is resuming is for Lebron. And in addition, the NBA really wants to try and get Zion in the playoffs, hence the decision to bring back 22 teams and trying to set it up so they pass Memphis.
Especially for upcoming FA's like Bertans, Tatum, etc., could you imagine returning and then suffering a serious injury which affects your FA market. That + the risk of COVID would probably put off a lot of others.